Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d99f6d87ee4420c…

MALICIOUS

PDF

73.6 KB Created: 2020-12-17 01:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f2ded763ab05271cc2ac0420c88e12f1 SHA-1: 69cfabb09f5ae9dae89e4c8e6d4abbb6139cc87e SHA-256: 5d99f6d87ee4420c03ffcc5e62aa1c9bc4d3110d3c52f973bb21ce9443b4a343
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/strik?utm_term=hindi+books+for+beginners+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f891fb1ece9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_5fa144969f590.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377678/normal_5fb9d5c0c5a12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5fd1cdf7b1c10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446027/normal_5fca297a9465c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc5b2462cf09257bd8c4d90/t/5fd6e5120f11661d4c3f54ee/1607918866450/jidovakorivini.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/the_dynamic_legislative_process_flowchart_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59fd8239b072291516773/t/5fcc9917a87f9f1b19d40549/1607244058457/20035663417.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/winobuvojad.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/82216664745.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a8f52bbd74065826fdfd/t/5fcca735fe657040d58d4c1b/1607247669758/smart_toolkit_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc646132bbd7406582b26cc/t/5fcc08b5e43f2b00a894aafe/1607207093572/andy_griffiths_audio_books.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2923b7848ba205d233c3f/t/5fc7d56c8c4551503ff189a5/1606931820969/safeway_weekly_ad_mesa_az.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD790 4840 bytes
SHA-256: 2dc424d8fb193145728118e4fdd5a393bfc4ee62e291efd018e3637202773125
font_01_sfnt_off0000e7fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FA 10376 bytes
SHA-256: 56e9f7f56a3503517371e8117e605a3ac24cc18fc2c50ef7a9d775c39ba620db
font_02_sfnt_off00010b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B80 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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